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STM32F0xx Standard Peripherals Firmware Library
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stm32f0xx_lp_modes.c
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00001 /** 00002 ****************************************************************************** 00003 * @file PWR/PWR_CurrentConsumption/stm32f0xx_lp_modes.c 00004 * @author MCD Application Team 00005 * @version V1.4.0 00006 * @date 24-July-2014 00007 * @brief This file provides firmware functions to manage the following 00008 * functionalities of the STM32F0xx Low Power Modes: 00009 * - Sleep Mode 00010 * - STOP mode with RTC 00011 * - STANDBY mode without RTC 00012 * - STANDBY mode with RTC 00013 ****************************************************************************** 00014 * @attention 00015 * 00016 * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> 00017 * 00018 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); 00019 * You may not use this file except in compliance with the License. 00020 * You may obtain a copy of the License at: 00021 * 00022 * http://www.st.com/software_license_agreement_liberty_v2 00023 * 00024 * Unless required by applicable law or agreed to in writing, software 00025 * distributed under the License is distributed on an "AS IS" BASIS, 00026 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00027 * See the License for the specific language governing permissions and 00028 * limitations under the License. 00029 * 00030 ****************************************************************************** 00031 */ 00032 00033 /* Includes ------------------------------------------------------------------*/ 00034 #include "stm32f0xx_lp_modes.h" 00035 00036 /** @addtogroup STM32F0xx_StdPeriph_Examples 00037 * @{ 00038 */ 00039 00040 /** @addtogroup PWR_CurrentConsumption 00041 * @{ 00042 */ 00043 00044 /* Private typedef -----------------------------------------------------------*/ 00045 /* Private define ------------------------------------------------------------*/ 00046 /* Private macro -------------------------------------------------------------*/ 00047 /* Private variables ---------------------------------------------------------*/ 00048 /* Private function prototypes -----------------------------------------------*/ 00049 /* Private functions ---------------------------------------------------------*/ 00050 00051 /** 00052 * @brief This function configures the system to enter Sleep mode for 00053 * current consumption measurement purpose. 00054 * Sleep Mode 00055 * ========== 00056 * - System Running at PLL (48MHz) 00057 * - Flash 1 wait state 00058 * - Prefetch and Cache enabled 00059 * - Code running from Internal FLASH 00060 * - All peripherals disabled. 00061 * - Wakeup using EXTI Line (KEY Button PB.08) 00062 * @param None 00063 * @retval None 00064 */ 00065 void SleepMode_Measure(void) 00066 { 00067 __IO uint32_t index = 0; 00068 GPIO_InitTypeDef GPIO_InitStructure; 00069 00070 /* Configure all GPIO as analog to reduce current consumption on non used IOs */ 00071 /* Enable GPIOs clock */ 00072 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC | 00073 RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOF , ENABLE); 00074 #ifdef USE_STM32072B_EVAL 00075 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE , ENABLE); 00076 #endif /* USE_STM32072B_EVAL */ 00077 00078 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN; 00079 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00080 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; 00081 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; 00082 GPIO_Init(GPIOC, &GPIO_InitStructure); 00083 GPIO_Init(GPIOD, &GPIO_InitStructure); 00084 GPIO_Init(GPIOF, &GPIO_InitStructure); 00085 GPIO_Init(GPIOA, &GPIO_InitStructure); 00086 GPIO_Init(GPIOB, &GPIO_InitStructure); 00087 #ifdef USE_STM32072B_EVAL 00088 GPIO_Init(GPIOE, &GPIO_InitStructure); 00089 #endif /* USE_STM32072B_EVAL */ 00090 00091 /* Disable GPIOs clock */ 00092 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC | 00093 RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOF, DISABLE); 00094 #ifdef USE_STM32072B_EVAL 00095 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE , DISABLE); 00096 #endif /* USE_STM32072B_EVAL */ 00097 00098 /* Configure Joystick SEL Button */ 00099 STM_EVAL_PBInit(BUTTON_SEL, BUTTON_MODE_EXTI); 00100 00101 /* Request to enter SLEEP mode */ 00102 __WFI(); 00103 00104 /* Initialize LED4 on EVAL board */ 00105 STM_EVAL_LEDInit(LED4); 00106 00107 /* Infinite loop */ 00108 while (1) 00109 { 00110 /* Toggle The LED4 */ 00111 STM_EVAL_LEDToggle(LED4); 00112 00113 /* Inserted Delay */ 00114 for(index = 0; index < 0x7FFFF; index++); 00115 } 00116 } 00117 00118 /** 00119 * @brief This function configures the system to enter Stop mode with RTC 00120 * clocked by LSI for current consumption measurement purpose. 00121 * STOP Mode with RTC clocked by LSI 00122 * ===================================== 00123 * - RTC Clocked by LSI 00124 * - Regulator in LP mode 00125 * - HSI, HSE OFF and LSI OFF if not used as RTC Clock source 00126 * - No IWDG 00127 * - FLASH in deep power down mode 00128 * - Automatic Wakeup using RTC clocked by LSI (~5s) 00129 * @param None 00130 * @retval None 00131 */ 00132 void StopMode_Measure(void) 00133 { 00134 __IO uint32_t index = 0; 00135 GPIO_InitTypeDef GPIO_InitStructure; 00136 NVIC_InitTypeDef NVIC_InitStructure; 00137 EXTI_InitTypeDef EXTI_InitStructure; 00138 RTC_InitTypeDef RTC_InitStructure; 00139 RTC_TimeTypeDef RTC_TimeStructure; 00140 RTC_AlarmTypeDef RTC_AlarmStructure; 00141 00142 /* Allow access to RTC */ 00143 PWR_BackupAccessCmd(ENABLE); 00144 00145 /* The RTC Clock may varies due to LSI frequency dispersion. */ 00146 /* Enable the LSI OSC */ 00147 RCC_LSICmd(ENABLE); 00148 00149 /* Wait till LSI is ready */ 00150 while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) 00151 { 00152 } 00153 00154 /* Select the RTC Clock Source */ 00155 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); 00156 00157 /* Enable the RTC Clock */ 00158 RCC_RTCCLKCmd(ENABLE); 00159 00160 /* Wait for RTC APB registers synchronisation */ 00161 RTC_WaitForSynchro(); 00162 00163 /* Configure all GPIO as analog to reduce current consumption on non used IOs */ 00164 /* Enable GPIOs clock */ 00165 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC | 00166 RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOF , ENABLE); 00167 #ifdef USE_STM32072B_EVAL 00168 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE , ENABLE); 00169 #endif /* USE_STM32072B_EVAL */ 00170 00171 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN; 00172 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00173 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; 00174 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; 00175 GPIO_Init(GPIOC, &GPIO_InitStructure); 00176 GPIO_Init(GPIOD, &GPIO_InitStructure); 00177 GPIO_Init(GPIOF, &GPIO_InitStructure); 00178 GPIO_Init(GPIOA, &GPIO_InitStructure); 00179 GPIO_Init(GPIOB, &GPIO_InitStructure); 00180 #ifdef USE_STM32072B_EVAL 00181 GPIO_Init(GPIOE, &GPIO_InitStructure); 00182 #endif /* USE_STM32072B_EVAL */ 00183 00184 /* Disable GPIOs clock */ 00185 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA |RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC | 00186 RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOF, DISABLE); 00187 #ifdef USE_STM32072B_EVAL 00188 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE , DISABLE); 00189 #endif /* USE_STM32072B_EVAL */ 00190 00191 RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; 00192 RTC_InitStructure.RTC_AsynchPrediv = 0x7F; 00193 RTC_InitStructure.RTC_SynchPrediv = 0x0138; 00194 00195 if (RTC_Init(&RTC_InitStructure) == ERROR) 00196 { 00197 while(1); 00198 } 00199 00200 /* EXTI configuration */ 00201 EXTI_ClearITPendingBit(EXTI_Line17); 00202 EXTI_InitStructure.EXTI_Line = EXTI_Line17; 00203 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; 00204 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; 00205 EXTI_InitStructure.EXTI_LineCmd = ENABLE; 00206 EXTI_Init(&EXTI_InitStructure); 00207 00208 /* NVIC configuration */ 00209 NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn; 00210 NVIC_InitStructure.NVIC_IRQChannelPriority = 0; 00211 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00212 NVIC_Init(&NVIC_InitStructure); 00213 00214 /* Set the alarm X+5s */ 00215 RTC_AlarmStructure.RTC_AlarmTime.RTC_H12 = RTC_H12_AM; 00216 RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = 0x01; 00217 RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = 0x00; 00218 RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = 0x05; 00219 RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; 00220 RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date; 00221 RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay; 00222 RTC_SetAlarm(RTC_Format_BCD, RTC_Alarm_A, &RTC_AlarmStructure); 00223 00224 /* Enable the alarm */ 00225 RTC_AlarmCmd(RTC_Alarm_A, ENABLE); 00226 00227 /* Enable the RTC Alarm A interrupt */ 00228 RTC_ITConfig(RTC_IT_ALRA, ENABLE); 00229 00230 /* Set the time to 01h 00mn 00s AM */ 00231 RTC_TimeStructure.RTC_H12 = RTC_H12_AM; 00232 RTC_TimeStructure.RTC_Hours = 0x01; 00233 RTC_TimeStructure.RTC_Minutes = 0x00; 00234 RTC_TimeStructure.RTC_Seconds = 0x00; 00235 00236 RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure); 00237 00238 /* Clear the Alarm A Pending Bit */ 00239 RTC_ClearITPendingBit(RTC_IT_ALRA); 00240 00241 /* Enter Stop Mode */ 00242 PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI); 00243 00244 /* Initialize LED4 on EVAL board */ 00245 STM_EVAL_LEDInit(LED4); 00246 00247 /* Infinite loop */ 00248 while (1) 00249 { 00250 /* Toggle The LED4 */ 00251 STM_EVAL_LEDToggle(LED4); 00252 00253 /* Inserted Delay */ 00254 for(index = 0; index < 0x5FFFF; index++); 00255 } 00256 } 00257 00258 /** 00259 * @brief This function configures the system to enter Standby mode for 00260 * current consumption measurement purpose. 00261 * STANDBY Mode 00262 * ============ 00263 * - RTC OFF 00264 * - IWDG and LSI OFF 00265 * - Wakeup using WakeUp Pin2 (PC.13) 00266 * @param None 00267 * @retval None 00268 */ 00269 void StandbyMode_Measure(void) 00270 { 00271 /* Disable wake-up source(Wake up pin) to guarantee free access to WUT level-OR input */ 00272 PWR_WakeUpPinCmd(PWR_WakeUpPin_1, DISABLE); 00273 00274 /* Clear Standby flag */ 00275 PWR_ClearFlag(PWR_FLAG_SB); 00276 00277 /* Clear Power Wake-up (CWUF) flag */ 00278 PWR_ClearFlag(PWR_FLAG_WU); 00279 00280 /* Enable WKUP pin 1 */ 00281 PWR_WakeUpPinCmd(PWR_WakeUpPin_1,ENABLE); 00282 00283 /* Request to enter STANDBY mode (Wake Up flag is cleared in PWR_EnterSTANDBYMode function) */ 00284 PWR_EnterSTANDBYMode(); 00285 00286 /* Infinite loop */ 00287 while (1) 00288 { 00289 } 00290 } 00291 00292 /** 00293 * @brief This function configures the system to enter Standby mode with RTC 00294 * clocked by LSI for current consumption measurement purpose. 00295 * STANDBY Mode with RTC clocked by LSI 00296 * ======================================== 00297 * - RTC Clocked by LSI 00298 * - IWDG OFF 00299 * - Automatic Wakeup using RTC 00300 * @param None 00301 * @retval None 00302 */ 00303 void StandbyRTCMode_Measure(void) 00304 { 00305 RTC_InitTypeDef RTC_InitStructure; 00306 RTC_AlarmTypeDef RTC_AlarmStructure; 00307 RTC_TimeTypeDef RTC_TimeStructure; 00308 00309 /* Allow access to RTC */ 00310 PWR_BackupAccessCmd(ENABLE); 00311 00312 /* The RTC Clock may varies due to LSI frequency dispersion. */ 00313 /* Enable the LSI OSC */ 00314 RCC_LSICmd(ENABLE); 00315 00316 /* Wait till LSI is ready */ 00317 while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) 00318 { 00319 } 00320 00321 /* Select the RTC Clock Source */ 00322 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); 00323 00324 /* Enable the RTC Clock */ 00325 RCC_RTCCLKCmd(ENABLE); 00326 00327 /* Wait for RTC APB registers synchronisation */ 00328 RTC_WaitForSynchro(); 00329 00330 RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; 00331 RTC_InitStructure.RTC_AsynchPrediv = 0x7F; 00332 RTC_InitStructure.RTC_SynchPrediv = 0x0138; 00333 00334 RTC_Init(&RTC_InitStructure); 00335 00336 /* Set the alarm X+5s */ 00337 RTC_AlarmStructure.RTC_AlarmTime.RTC_H12 = RTC_H12_AM; 00338 RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = 0x01; 00339 RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = 0x00; 00340 RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = 0x08; 00341 RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; 00342 RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date; 00343 RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay; 00344 RTC_SetAlarm(RTC_Format_BCD, RTC_Alarm_A, &RTC_AlarmStructure); 00345 00346 /* Enable the alarm */ 00347 RTC_AlarmCmd(RTC_Alarm_A, ENABLE); 00348 00349 /* Set the time to 01h 00mn 00s AM */ 00350 RTC_TimeStructure.RTC_H12 = RTC_H12_AM; 00351 RTC_TimeStructure.RTC_Hours = 0x01; 00352 RTC_TimeStructure.RTC_Minutes = 0x00; 00353 RTC_TimeStructure.RTC_Seconds = 0x00; 00354 00355 RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure); 00356 00357 /* Disable RTC Alarm A Interrupt */ 00358 RTC_ITConfig(RTC_IT_ALRA, DISABLE); 00359 00360 /* Clear Power Wake-up (CWUF) flag */ 00361 PWR_ClearFlag(PWR_FLAG_WU); 00362 00363 /* Enable RTC Alarm A Interrupt */ 00364 RTC_ITConfig(RTC_IT_ALRA, ENABLE); 00365 00366 RTC_ClearFlag(RTC_FLAG_ALRAF); 00367 00368 /* Request to enter STANDBY mode (Wake Up flag is cleared in PWR_EnterSTANDBYMode function) */ 00369 PWR_EnterSTANDBYMode(); 00370 00371 /* Infinite loop */ 00372 while (1) 00373 { 00374 } 00375 } 00376 00377 /** 00378 * @} 00379 */ 00380 00381 /** 00382 * @} 00383 */ 00384 00385 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/